Key to sessile gnesiotrochan rotifers: Families, monospecific species in Flosculariidae, species of Atrochidae, Conochilidae, and Limnias Author Davies, Natalie Department of Biology, Ripon College, Ripon, WI, 54971, USA Author Lafleur, Alexandre Department of Biology, Ripon College, Ripon, WI, 54971, USA Author Hochberg, Rick University of Massachusetts Lowell, Lowell, MA, 01854, USA Author Walsh, Elizabeth J. Department of Biological Sciences, University of Texas at El Paso, El Paso, TX, 79968, USA Author Wallace, Robert L. Department of Biology, Ripon College, Ripon, WI, 54971, USA text Zootaxa 2024 2024-01-08 5397 4 497 520 http://dx.doi.org/10.11646/zootaxa.5397.4.3 journal article 284552 10.11646/zootaxa.5397.4.3 2c1aad6c-620c-428e-8c95-8781c688f7ca 1175-5326 10469053 3EE9F78B-0133-4466-872C-F14CEF87E928 Dichotomous key to order Collothecacea 1 Infundibulum bearing setae and/or cilia; with or without lobes (tentacles, knobs, or apices); gelatinous tubes; sessile or planktonic...................................................................... Collothecidae Bartoš, 1959 1’ Infundibulum lacking cilia or setae; unlobed or with one long, very flexible lobe, or with short, horny processes; with or without gelatinous tube; sessile or benthic (crawling)............................................ Atrochidae Bartoš, 1959